{"id":5545,"date":"2015-07-02T16:13:34","date_gmt":"2015-07-02T09:13:34","guid":{"rendered":"http:\/\/thietbihoinghi.com.vn\/?p=5545"},"modified":"2025-04-17T18:43:41","modified_gmt":"2025-04-17T11:43:41","slug":"nguyen-ly-va-chuc-nang-cua-he-thong-hoi-nghi-truyen-hinh","status":"publish","type":"post","link":"https:\/\/thietbihoinghi.com.vn\/en\/giai-phap\/nguyen-ly-va-chuc-nang-cua-he-thong-hoi-nghi-truyen-hinh.htm","title":{"rendered":"Nguy\u00ean l\u00fd v\u00e0 ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh"},"content":{"rendered":"

L\u00e0 m\u1ed1i quan t\u00e2m l\u1edbn c\u1ee7a c\u00e1c doanh nghi\u1ec7p, c\u00e1c t\u1ed5 ch\u1ee9c khi mang \u0111\u1ebfn nhi\u1ec1u l\u1ee3i \u00edch trong vi\u1ec7c li\u00ean k\u1ebft, trao \u0111\u1ed5i th\u00f4ng tin, v\u1eady nguy\u00ean l\u00fd v\u00e0 ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh<\/a> <\/strong>l\u00e0 g\u00ec? Khi \u0111\u00e2y l\u00e0 gi\u1ea3i ph\u00e1p c\u1ef1c hay gi\u00fap cho c\u00e1c t\u1ed5 ch\u1ee9c, doanh nghi\u1ec7p c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng gi\u1ea3i quy\u1ebft nh\u1eefng kh\u00f3 kh\u0103n khi trao \u0111\u1ed5i th\u00f4ng tin c\u0169ng nh\u01b0 nh\u1eefng h\u1ea1n ch\u1ebf v\u1ec1 v\u1ea5n \u0111\u1ec1 chi ph\u00ed.<\/span><\/p>\n

\u00a0<\/span><\/p>\n

\"Nguy\u00ean<\/a>Nguy\u00ean l\u00fd v\u00e0 ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh<\/em><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

Xem th\u00eam: Gi\u1ea3i ph\u00e1p h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh \u0111a \u0111i\u1ec3m<\/a><\/span><\/p>\n

\u00a0<\/span><\/p>\n

Ch\u00fang ta hi\u1ec7n \u0111ang s\u1ed1ng trong m\u1ed9t th\u1eddi \u0111\u1ea1i m\u00e0 th\u00f4ng tin gi\u1eef vai tr\u00f2 v\u00f4 c\u00f9ng thi\u1ebft y\u1ebfu, do v\u1eady m\u00e0 vi\u1ec7c trao \u0111\u1ed5i, c\u1eadp nh\u1eadt th\u00f4ng tin l\u00e0 m\u1ed9t nhu c\u1ea7u kh\u00f4ng th\u1ec3 thi\u1ebfu v\u1edbi m\u1ecdi ng\u01b0\u1eddi. \u0110\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ed1i v\u1edbi c\u00e1c t\u1ed5 ch\u1ee9c c\u00f9ng c\u00e1c doanh nghi\u1ec7p th\u00ec nhu c\u1ea7u n\u00e0y c\u00e0ng l\u1ea1i quan tr\u1ecdng h\u01a1n, quy\u1ebft \u0111\u1ecbnh cho s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a doanh nghi\u1ec7p c\u0169ng nh\u01b0 t\u1ed5 ch\u1ee9c.<\/span><\/p>\n

\u00a0<\/span><\/p>\n

Hi\u1ec7n nay v\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00f4ng ngh\u1ec7 th\u00ec doanh nghi\u1ec7p ho\u1eb7c t\u1ed5 ch\u1ee9c c\u1ee7a b\u1ea1n ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 t\u00ecm th\u1ea5y nh\u1eefng g\u00ec b\u1ea1n c\u1ea7n t\u1eeb gi\u1ea3i ph\u00e1p h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh<\/a><\/strong>, nh\u1eb1m \u0111\u00e1p \u1ee9ng nhu c\u1ea7u trao \u0111\u1ed5i th\u00f4ng tin m\u1ed9t c\u00e1ch tr\u1ef1c ti\u1ebfp, nhanh ch\u00f3ng, ch\u00ednh x\u00e1c cho \u0111\u1ebfn vi\u1ec7c gi\u1ea3m \u0111\u01b0\u1ee3c nh\u1eefng chi ph\u00ed kh\u00f4ng c\u1ea7n thi\u1ebft hay nh\u1eefng r\u1ee7i ro cho vi\u1ec7c di chuy\u1ec3n.<\/span><\/p>\n

\u00a0<\/span><\/p>\n

\"Gi\u1ea3i<\/a>Gi\u1ea3i ph\u00e1p h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh mang l\u1ea1i nhi\u1ec1u\u00a0l\u1ee3i \u00edch g\u00ec?<\/em><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

S\u1eed d\u1ee5ng gi\u1ea3i ph\u00e1p h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh s\u1ebd mang l\u1ea1i nh\u1eefng l\u1ee3i \u00edch g\u00ec?<\/b><\/span><\/h2>\n

\u2022 \u0110\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c nhu c\u1ea7u li\u00ean l\u1ea1c, trao \u0111\u1ed5i th\u00f4ng tin m\u1ecdi l\u00fac, m\u1ecdi n\u01a1i.<\/span><\/p>\n

\u2022 Giao ti\u1ebfp tr\u1ef1c quan, t\u01b0\u01a1ng t\u00e1c cao t\u1eeb 2 hay nhi\u1ec1u ph\u00eda.<\/span><\/p>\n

\u2022 Th\u00f4ng tin chu\u1ea9n x\u00e1c, nhanh ch\u00f3ng, \u0111\u1ed3ng b\u1ed9 v\u00e0 h\u1ea1n ch\u1ebf sai l\u1ec7ch.<\/span><\/p>\n

\u2022 Nh\u1eefng th\u00f4ng tin trao \u0111\u1ed5i \u0111\u1ec1u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef v\u00e0 \u0111\u1ea3m b\u1ea3o an to\u00e0n.<\/span><\/p>\n

\u2022 Ti\u1ebft ki\u1ec7m th\u1eddi gian nh\u1edd thi\u1ebft l\u1eadp cu\u1ed9c h\u1ecdp ho\u1eb7c h\u1ed9i ngh\u1ecb d\u1ec5 d\u00e0ng, nhanh ch\u00f3ng.<\/span><\/p>\n

\u2022 T\u00ednh thu\u1eadn ti\u1ec7n v\u00e0 di \u0111\u1ed9ng cao nh\u1edd thi\u1ebft b\u1ecb g\u1ecdn v\u00e0 nh\u1eb9\u2026<\/span><\/p>\n

\u2022 Ti\u1ebft ki\u1ec7m chi ph\u00ed khi c\u00f3 th\u1ec3 t\u1eadn d\u1ee5ng \u0111\u01b0\u1ee3c c\u00e1c thi\u1ebft b\u1ecb v\u0103n ph\u00f2ng, gi\u1ea3m chi ph\u00ed \u0111i l\u1ea1i, chi ph\u00ed sinh ho\u1ea1t\u2026<\/span><\/p>\n

\u00a0<\/span><\/p>\n

Xem th\u00eam: Gi\u1ea3i ph\u00e1p k\u1ebft h\u1ee3p Skype v\u1edbi h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh<\/a><\/span><\/p>\n

\u00a0<\/span><\/p>\n

\"Nguy\u00ean<\/a>H\u1ec7 th\u1ed1ng h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh c\u00f3 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/em><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng, ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh<\/b><\/span><\/h2>\n

\u0110\u1ea7u ti\u00ean m\u1ed9t cu\u1ed9c g\u1ecdi s\u1ebd \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp th\u00f4ng qua \u0111\u1ecba ch\u1ec9 IP \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t t\u1eeb l\u00fac ban \u0111\u1ea7u, hay t\u1eeb thi\u1ebft b\u1ecb trung t\u00e2m (MCU) g\u1ecdi \u0111\u1ebfn cho thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i ho\u1eb7c th\u1ef1c hi\u1ec7n ng\u01b0\u1ee3c l\u1ea1i.<\/span><\/p>\n

B\u0103ng th\u00f4ng \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i gi\u1eefa 2 \u0111i\u1ec3m s\u1ebd ph\u1ee5 thu\u1ed9c v\u00e0o ph\u1ea7n b\u0103ng th\u00f4ng \u0111\u01b0\u1ee3c \u1ea5n \u0111\u1ecbnh tr\u01b0\u1edbc, thu\u1ed9c ph\u00eda thi\u1ebft b\u1ecb n\u00e0o kh\u1edfi t\u1ea1o cu\u1ed9c g\u1ecdi ngay c\u1ea3 s\u1eed khi d\u1ee5ng ch\u1ee9c n\u0103ng presentation.<\/span>\u00a0<\/span><\/p>\n

Song song \u0111\u00f3 th\u00ec b\u0103ng th\u00f4ng d\u00f9ng \u0111\u1ec3 k\u1ebft n\u1ed1i t\u1eeb \u0111i\u1ec3m c\u1ea7u \u0111\u1ebfn \u0111i\u1ec3m trung t\u00e2m ph\u1ea3i \u0111\u1ea1t t\u1ed1i thi\u1ec3u l\u00e0 256Kbps, hay \u0111\u1ea1t chu\u1ea9n HD \u1edf 1Mbps (\u0111\u1ed1i v\u1edbi s\u1ea3n ph\u1ea9m Aver) v\u00e0 \u0111\u1ea1t 512 Kbps (\u0111\u1ed1i v\u1edbi s\u1ea3n ph\u1ea9m Polycom), c\u00f2n khi c\u00f3 presentation th\u00ec y\u00eau c\u1ea7u b\u0103ng th\u00f4ng s\u1ebd cao h\u01a1n.<\/span><\/p>\n

C\u00f2n v\u1edbi b\u0103ng th\u00f4ng t\u1ea1i \u0111i\u1ec3m trung t\u00e2m (MCU) th\u00ec ph\u1ea3i b\u1eb1ng t\u1ed5ng b\u0103ng th\u00f4ng c\u1ee7a c\u00e1c \u0111i\u1ec3m c\u1ea7u k\u1ebft n\u1ed1i v\u00e0o \u0111\u1ec3 c\u00f3 th\u1ec3 x\u1eed l\u00fd v\u00e0 truy\u1ec1n t\u1ea3i \u0111\u01b0\u1ee3c n\u1ed9i dung cu\u1ed9c h\u1ecdp \u0111\u1ebfn t\u1ea5t c\u1ea3 c\u00e1c \u0111i\u1ec3m c\u1ea7u h\u1ed9i ngh\u1ecb kh\u00e1c.<\/span><\/p>\n

B\u0103ng th\u00f4ng c\u0169ng c\u1ea7n c\u00f3 t\u1ed1c \u0111\u1ed9 upload v\u00e0 download b\u1eb1ng nhau.<\/span><\/p>\n

V\u1edbi m\u1ed7i cu\u1ed9c g\u1ecdi th\u1ef1c hi\u1ec7n t\u1eeb b\u00ean ngo\u00e0i v\u00e0o (k\u1ec3 c\u1ea3 c\u1ed1 \u0111\u1ecbnh v\u00e0 di \u0111\u1ed9ng) \u0111\u1ec1u \u0111\u01b0\u1ee3c xem l\u00e0 01 \u0111i\u1ec3m c\u1ea7u k\u1ebft n\u1ed1i (hay 01 \u0111\u1ecba ch\u1ec9 IP).<\/span><\/p>\n

Thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i h\u1ed9i ngh\u1ecb s\u1ebd \u0111\u00f3ng vai tr\u00f2 x\u1eed l\u00fd v\u00e0 thu ph\u00e1t \u00e2m thanh, h\u00ecnh \u1ea3nh t\u1ea1i ph\u00f2ng h\u1ed9i ngh\u1ecb.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

L\u00e0 m\u1ed1i quan t\u00e2m l\u1edbn c\u1ee7a c\u00e1c doanh nghi\u1ec7p, c\u00e1c t\u1ed5 ch\u1ee9c khi mang \u0111\u1ebfn nhi\u1ec1u l\u1ee3i \u00edch trong vi\u1ec7c li\u00ean k\u1ebft, trao \u0111\u1ed5i th\u00f4ng tin, v\u1eady nguy\u00ean l\u00fd v\u00e0 ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh l\u00e0 g\u00ec? Khi \u0111\u00e2y l\u00e0 gi\u1ea3i ph\u00e1p c\u1ef1c hay gi\u00fap cho c\u00e1c t\u1ed5 ch\u1ee9c, doanh nghi\u1ec7p … <\/p>\n

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